[boraz]

There must be some sort of warning that you need to keep driving, surely? It makes no sense to just let the DPF get blocked without letting the driver know.

there is a keep driving msg possible on the DIC if conditions warrant it.

78,000 miles here, have never seen it.

 

[BDCCruze]

youre quoting a person that drives a completely different car than yours

him posting aboot a f150 would be as helpful as posting aboot his car in relation to yours.

your car does not have a dpf lamp, thats why youve never seen it.

I'm talking about the DIC message to continue driving. I confused it with the DEF warning lamp. I'll edit my original post.

 

[boraz]

I'm talking about the DIC message to continue driving. I confused it with the DEF warning lamp. I'll edit my original post.

10-4

car is designed to hide the regen process from the driver

if the car is operating properly you wont notice it.

many track it with a scangauge2, but not necessary.

 

[sailurman]

97K and never seen it.

 

[MRO1791]

There must be some sort of warning that you need to keep driving, surely? It makes no sense to just let the DPF get blocked without letting the driver know.

We don't get warning lights for a normal regen event.. this would be too much information for too many people here, thus we don't get it. The warning message to keep driving will only display in rather unusual cases where the soot levels have gone above where the regular regen starts..so it is indicates multiple incomplete regens to get there. People who drive mostly highway, and longer commutes/trips will likely never see the keep driving message. Use the car for very short trips only, and that will set it up for all kinds off emissions problems.

The trend here on all cars is to rely less and less on driver interaction with the car, less information, more automation. Those of us who like that information are a tiny market, GM won't mass produce a car for our wants, and it's looking like 2018 might be the last of the manual transmission Cruze, its already rare now, and in many models it is not even an option.

Since I do monitor for regens, I find the best way to keep from issues is to let the regen finish, in most cases start to finish it is less than 20 minutes.. so it might mean I drive an extra 5-10 minutes on my commute, but it seems to work in preventing any problems.. I wish there was a built in way with the car to indicate normal regens, but there is not. That said, I can tell without a OBD 2 read, there are indicators. MPG will drop, the car will surge a bit when adjusting throttle in cruise control (all my DPF Diesels do this, Gen 1, Gen 2, and Cummins). That however requires paying very close attention to the car, something very few modern drivers do.

 

[MRO1791]

Oh, one other way to avoid the interrupted "pre-regen" problem, without a scan gauge: let the car idle a minute or two after you park, before shutting it off. In worst case where it started pre-regen, it will at least be out of that mode, and you should have cleared what is likely un-burned fuel, or some of it. This is also a good idea because once you shut off the car, the oil flow stops.. if you have very high EGTs prior to shut off, that heat will now accelerate the degradation of the oil left in the turbo since there is no more oil flow to remove the heat, and only then only losses to ambient. It's not required, but it can help prolong the life of the oil, and engine.

 

[Aussie]

We don't get warning lights for a normal regen event.. this would be too much information for too many people here, thus we don't get it. The warning message to keep driving will only display in rather unusual cases where the soot levels have gone above where the regular regen starts.

That is how the region light works as well. I only saw it twice in 60K km of over 90% city driving. City driving here is much slower than what you have in the USA. Far to many 50kph roads and lights etc. Car almost never gets past 4th gear as it needs over 80kph before it will change up. Car has the 6T45 transmission and a 2.64 final drive ratio.

 

[BDCCruze]

Was playing with a scan tool today and saw my car shows 785 miles average between regens. Not sure if that's about right or not but I was expecting it to regen daily.

 

[Rivergoer]

Was playing with a scan tool today and saw my car shows 785 miles average between regens. Not sure if that's about right or not but I was expecting it to regen daily.

785 sounds accurate, I generally see regens (Scan Gauge 2) between 650 -750 miles. Have had a few over 800 miles, others here have reported up to 1,000 miles between regens.

Regen frequency depends on a number of conditions so there’s no ‘set’ time or distance.

You won’t see daily regens, not unless you’re doing over 600 miles a day.

 

[BDCCruze]

Reading somewhere where people claiming the DPF only last around 100k miles. Is there any truth to that? Otherplaces say that it should last the life of the vehicle if you do enough highway driving to let it regen.

Do we have any really high mileage drivers (150k +) that have had to replace it?

 

[boraz]

Reading somewhere where people claiming the DPF only last around 100k miles. Is there any truth to that? Otherplaces say that it should last the life of the vehicle if you do enough highway driving to let it regen.

Do we have any really high mileage drivers (150k +) that have had to replace it?

manufacturer claims life of vehicle but it is a wear item

life of vehicle means what?

it should last 200k miles, most wont keep vehicle that long

 

[grs1961]

DPF lifetime is an interesting question, they've been in use in Europe for over a decade, and there hasn't been a spate of DPF replacements, it's not something I let myself worry about.

And the DPF on a DEF equipped vehicle gets a lot less of a work-out than a standalone DPF, (but it may be smaller).

I plan on keeping my Cruze until it falls apart, after eight years the only non-maintenance or recall item I have had is an engine mount replacement.

 

[Aussie]

DPF lifetime is an interesting question, they've been in use in Europe for over a decade, and there hasn't been a spate of DPF replacements, it's not something I let myself worry about.

And the DPF on a DEF equipped vehicle gets a lot less of a work-out than a standalone DPF, (but it may be smaller).

I plan on keeping my Cruze until it falls apart, after eight years the only non-maintenance or recall item I have had is an engine mount replacement.

My only issue has been poor metal in the front rotors, which I resolved myself as I don't see the point of replacing rubbish material with more rubbish material.

 

[BDCCruze]

DPF lifetime is an interesting question, they've been in use in Europe for over a decade, and there hasn't been a spate of DPF replacements, it's not something I let myself worry about.

And the DPF on a DEF equipped vehicle gets a lot less of a work-out than a standalone DPF, (but it may be smaller).

I plan on keeping my Cruze until it falls apart, after eight years the only non-maintenance or recall item I have had is an engine mount replacement.

Well I hope the DPF they use in the US is as good as the one used in Straya.

 

[Aussie]

Well I hope the DPF they use in the US is as good as the one used in Straya.

My Australian Cruze has a different diesel engine to the one grs1961 has and my DPF has been faultless since I bought new in 2012. Most of my driving has been slow suburban and the occasional trip.

 

[grs1961]

Well I hope the DPF they use in the US is as good as the one used in Straya.

Well, mine's Korean, I don't know where the DPF was made, probably China, like 99.9999999% of everything these days.

 

[pfw_dfw]

First off, if you do not have a monitor like a Scangauge II, you will not be able to see this. Also, the odds that it will happen to you are VERY LOW, but it is possible. It happened to me the first time at 115K miles,

For those of you with a monitor - DO NOT shut your car off during this "Pre-Regen" period. It will cause a DPF Full message and send you to the dealer. My theory is that it's heating up the exhaust but it's not yet hot enough to start burning off the soot, and the extra fuel will be mistaken by the sensors as extra soot. I had my grams of soot go from 22-35 immediately once and this is why. 32 Grams is the threshold to force a manual regen which at this time can only be done by a dealership. Also, if you drive too far with the "DPF Full" and "Reduced Power" message, it is possible to ruin the DPF.

Here's a video. The "Pre-Regen" is before a regen is indicated by a 1 on the gauge, but when the MAP is below 14, or the boost is negative.

There is no reason whatsoever why there should not be a Manual Regen function programmed into the Center Display
Console:
Regen DPF?
When Pressed:
Confirm Regen DPF? Notice: You will not be able to Manually force a Manual Regen DPF for another 200 Miles.
Y/N?
Are you Sure?
Y/N?
Display: Manual Regen in Process.

 

[Snipesy]

DPF lifetime is an interesting question, they've been in use in Europe for over a decade, and there hasn't been a spate of DPF replacements, it's not something I let myself worry about.

And the DPF on a DEF equipped vehicle gets a lot less of a work-out than a standalone DPF, (but it may be smaller).

I plan on keeping my Cruze until it falls apart, after eight years the only non-maintenance or recall item I have had is an engine mount replacement.

I’ll be honest I have never seen them break before. Every single incident of a “DPF FAILURE” I have seen was in fact a misdiagnosis.

And this is including $1,000,000 construction equipment.

The worse stress they go through is if they are clogged and then the subsequent burning. But we are not gas engines so it just doesn’t get hot enough. The only time it does happen is if you drive tens of thousands of miles on a clogged DPF. That persistent heat up cool down will start causing damage... But again.... It takes a super long time of obvious neglect.